Your answer would be
D.Trade deficits
Hope I helped ;)
My history in the time of the depression is a bit sketchy but i think its B
Nordic countries rank so high on the happiness report because they have things like free education and healthcare, low crime rates, cushy social security nets, a relatively homogeneous population."We find happiness in our own pursuits," like our professional work and passions,
It means that throughout history one main perspective or viewpoint has been shown off or presented as fact while others have been ignored. The Caucasian perspective. However this quote is also an opinion and should NOT be taken as fact.